题目内容

OSPF属于下列哪种类型的协议?

A. 内部路由协议
B. 外部路由协议

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某部门网络管理员使用DHCP服务器对公司内部主机的IP地址进行管理,已知:
1) 该公司共有40个可用IP地址为:202.112.11.11.11~202.112.11.50
2) DHCP服务器选用Windows 2003 操作系统,其IP 地址为:202.112.11.11
3) 连接该子网络路由器端口的IP地址为202.112.11.12
4) DHCP客户机使用Windows XP操作系统
请问答下列问题:
(1)配置DHCP服务器作用域时,起始IP地址输入202.112.11.11,结束IP地址输入202.112.11.50,长度域输入的数值为26。在设置“添加排除”时,起始IP地址应为 【11】 ,结束IP地址应为 【12】 。
(2)DHCP服务器已经获得地址租约,但ping http://www.bupt.edu.cn/失败,与DHCP服务器配置有关的原因是 【13】 。
(3)在DHCP服务器给客户机分配地址租约后,是否可以主动收回地址租约? 【14】 (注:请填写“是”或“否”)
(4)在Windows 2003 sever中,DHCP服务器默认租约期限是 【15】 天。

(26)采用本地配置方式对Cisco Aironet 1100进行初次配置时,在浏览器的地址栏中应输入的IP地址是

A. 10.0.0.1
B. 127.0.0.1
C. 172.16.0.1
D. 192.168.0.1

(55)关系模式R 的规范化程度最高达到
A)1NF
B)2NF
C)3NF
D)4NF

● Although a given waveform. may contain frequencies over a very broad range, as a practical matter any transmission system will be able to accommodate only a limited band of (71) . This, in turn, limits the data rate that can be carried on the transmission (72) . Asquare wave has an infinite number of frequency components and hence an infinite (73) . However, the peak amplitude of the kth frequency component, kf, is only 1/k, so most of the (74) in this waveform. is in the first few frequency components. In general, any digital waveform. will have (75) bandwidth. If we attempt to transmit this waveform. as a signal over any medium, the transmission system will limit the bandwidth that can be transmitted.
(71)A. frequencies B. connections C. diagrams D. resources
(72)A. procedure B. function C. route D. medium
(73)A. source B. bandwidth C. energy D. cost
(74)A. frequency B. energy C. amplitude D. phase
(75)A. small B. limited C. infinite D. finite

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